diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0d424ff..6665b5f 100755
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,8 @@
 # Filestack-php Changelog
 
+## 1.1.5 (May 31, 2017)
+- Updated source header to Filestack-Source
+
 ## 1.1.4 (May 26, 2017)
 - FS-980 modified upload() function to use multiparts upload api
 - FS-1039 added getConvertTaskInfo() to client and filelink
diff --git a/VERSION b/VERSION
index 65087b4..e25d8d9 100755
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.1.4
+1.1.5
diff --git a/filestack/mixins/CommonMixin.php b/filestack/mixins/CommonMixin.php
index adce23c..fd57244 100644
--- a/filestack/mixins/CommonMixin.php
+++ b/filestack/mixins/CommonMixin.php
@@ -448,7 +448,7 @@ protected function addRequestSourceHeader(&$headers)
     {
         $source_header = $this->getSourceHeader();
         $headers['User-Agent'] = $source_header;
-        $headers['X-Filestack-Source'] = $source_header;
+        $headers['Filestack-Source'] = $source_header;
     }
 
     /**